You will be prompted to log-in. The default username is "admin" and the password is "admin" (unless you have changed these).

Click on "Administration" on the left menu

Click on "Firmware Upgrade" on the left menu

Click "Browse" and select the firmware file that you have been provided

Be sure to set the "After flashing, reset to" option to "Reset to Default Settings"

Click on "Upgrade".

The upgrade process will now begin and take up to 5 minutes to complete, and reboot

If you receive an error message when trying to upgrade, that says the Upgrade Failed, then please follow the steps below as an alternative method:

Go to Services at the top then scroll down to SSH

Click to Enable SSHd

Click Save, then click apply at the bottom

Finally, click Reboot

After the router has rebooted, you'll need to use an SSH client (i.e. putty or ssh command line). Connect to the router IP 192.168.11.1 and login with username root and your the same password you use for the web interface. Once logged in to SSH, run the following commands, one per line. Please ensure the router is connected to an Internet connection.